Before, it was a normal PC power supply -> 750 TI -> HDMI. I swapped between the two, couldn't believe the difference...

Define "normal PC power supply." Make and model, please. What's the purpose of the 250W converter? I didn't see that listed on the HD Plex website. Also, will this work in any PC case or is it only compatible with the HD Plex cases?

FYI, there are a lot of crap PSUs supplied with PC cases. If that's what you were using then upgrading to any decent name brand PSU may work just as well as your linear PSU.

FWIW, I looked up the PSU he referenced and it's an audiophile specialty product. I know back in the days when I was bit by the high end audiophile bug, power supplies were a hot topic and were proven to have a direct relation to sound quality.

Saying something is crap without listening to it first is just plain ignorant. I'm not defending the OP, but it's possible he might be onto something. I prefer to keep an open mind when it comes to audio products and sound quality.

Digital is digital. It is either a zero or a one. It's not anything else. If the signal gets to your DAC in your AVR then the HTPC has no effect on sound quality, even if you plug the HTPC into a million dollar line conditioner.

Define "normal PC power supply." Make and model, please. What's the purpose of the 250W converter? I didn't see that listed on the HD Plex website. Also, will this work in any PC case or is it only compatible with the HD Plex cases?

FYI, there are a lot of crap PSUs supplied with PC cases. If that's what you were using then upgrading to any decent name brand PSU may work just as well as your linear PSU.

FWIW, I looked up the PSU he referenced and it's an audiophile specialty product. I know back in the days when I was bit by the high end audiophile bug, power supplies were a hot topic and were proven to have a direct relation to sound quality.

Saying something is crap without listening to it first is just plain ignorant. I'm not defending the OP, but it's possible he might be onto something. I prefer to keep an open mind when it comes to audio products and sound quality.

And what is it with all the soul piercing lately?

250W is the second product on the hd-plex power supply page. IT converts 19v to PC voltage and connectors.

The power supply I had before was a SilverStone NightJar fanless PSU.

Seriously the difference was so huge it was a VERY pleasant surprise. Upgrading the pc power supply was one of the last thing I thought I'd try (very nice having lots of disposable income), and boy am I happy that I did.

I should be charging you guys for this tip But I'm giving it away for free. Hah.

Power supply is important but only at the analog stage of the last output device. He is using HDMI to send digital audio to the receiver for audio output. How is a power supply in the PC can affect or make bass deeper and highs piercing in the HDMI digital audio stream?

Define "normal PC power supply." Make and model, please. What's the purpose of the 250W converter? I didn't see that listed on the HD Plex website. Also, will this work in any PC case or is it only compatible with the HD Plex cases?

FYI, there are a lot of crap PSUs supplied with PC cases. If that's what you were using then upgrading to any decent name brand PSU may work just as well as your linear PSU.

FWIW, I looked up the PSU he referenced and it's an audiophile specialty product. I know back in the days when I was bit by the high end audiophile bug, power supplies were a hot topic and were proven to have a direct relation to sound quality.

Saying something is crap without listening to it first is just plain ignorant. I'm not defending the OP, but it's possible he might be onto something. I prefer to keep an open mind when it comes to audio products and sound quality.

And what is it with all the soul piercing lately?

I have a very open mind when it comes to things that are possible within the known limits of physics.

Moving from a switching mode power supply to a linear power supply isn't going to make a bit of difference to the digital signal that is leaving the OP's PC. If he was using analog out from his computer, I would absolutely believe that switching power supplies made a significant difference on his output quality, but not with digital. No Sir.

Heck, if he had done a reliable double-blind test and still claimed it sounded better, I might believe be inclined to think *something* was going on.. But to quote the late Carl Sagan, "Extraordinary claims require extraordinary evidence."

Power supply is important but only at the analog stage of the last output device. He is using HDMI to send digital audio to the receiver for audio output. How is a power supply in the PC can affect or make bass deeper and highs piercing in the HDMI digital audio stream?

Sound quality is highly subjective and varies from individual to individual. Comparing a reproduced sound to a reference (i.e., live music) is the best anyone can hope for when it comes to subjective reasoning.

The OP indicated he did not expect a difference when using HDMI yet he claims he did. Who are we to tell him what he did or didn't hear without being present while the listening was actually taking place? Unless anyone was there to witness the event, any argument against his claim is pure speculation, but speculation based on experience and knowledge we already possess.

Bull&hit or not is anybody's guess without listening for themselves.

I can't argue with the Engineering aspect regarding the digital signal. I would not expect to hear any difference either. I just prefer to reserve judgement until such time that I can hear it for myself.

Naysayers are in abundance whenever anyone makes a claim that rocks the boat. Just think where we'd be if everytime someone discovered something new they listened to the negativity that invariably ensued. We'd still be in the dark ages.

To the OP - If you found a product that enhances your enjoyment, good for you. Whether it actually works is anyone's guess. The fact that you perceive it to work is all that should matter to you. Enjoy!

Is there a way to have some admin keep posts like this from posting? So we don't have to waste our time.

This is one of the most ignorant AND stupid posts I have ever read.

The power supply feeding the computer has ZERO effect on the DIGITAL output through the HDMI cable. Therefore, the difference of one power source over another feeding the computer would have ZERO difference on the end sound.

Naysayers are in abundance whenever anyone makes a claim that rocks the boat.

Only when those claims aren't backed up with evidence. This is AVS, not AVBS.

Want to claim X is better than Y? What equipment are you using? What are your tests? What are your metrics? If it's a subjective measurement, that's not a problem; tackle that with polls or surveys or trusted judges. The point is: show your work. That's the difference between contributing to science and spouting quackery.